The following water quality updates have been issued for Tuesday, October 17, 2023:

  • A Pet Advisory will be posted at Parker Pond, Osterville. This pond has been reduced from a recent Public Health Advisory to a Pet Advisory due to a reduction in cyanobacteria biomass.

Current postings as of Tuesday, October 17, 2023:

Cyanobacteria Pet AdvisoryPet Advisory

Parker Pond, Osterville








If you are interested in receiving more information about Cyanobacteria and locations monitored, you may view the 2023 Cyanobacteria Monitoring Map at

If you are interested in receiving email notifications when there is a potential toxic bloom identified by Association to Preserve Cape Cod (APCC), you may opt-in by clicking this link: where you will be asked to enter your email address in order to receive cyanobacteria alerts.

Thomas A. McKean, RS, CHO
Director of Public Health